Hygrometric apparatus



yPatented July l2, 1927.

UNITED STATES i 1,635,697 PATENT ortica;r

y SAMUEL S. AMDURSKY, OF ROCHESTER, NEW YORK, ASSIGNOR`TO TAYLOR INSTRU- f MENT COMPANIES, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

HYGROMETRIC APPARATUS.

Application filed January This invention relates to hygrometric apparatus and, more particularly, to the variety employing a sensitive, thermometric element or bulb arranged in a current of air ysaturatedby a Water spraying device or othersuitable means for affording the 'desiredwet bulb temperature. V- One object ot' the invention is to provide an improvedand -more eiiicient apparatus of the character de` scribed embodying -a construction and arrangements of partsadapted to vdispose of dust, lint and other impurities in the current of air land thus particularly suitable for use in paper and other mills and factories Where thevair'isladen'vvith such impurities.

paratus comprises a main or spray cham- Another objectiS to lprovide such an apparatus comprising an eflicient arrangement of parts for eliminating impurities 'from the air current beforelthe latter reaches the sat vurating'or spraying device. A further lobject is to provide an apparatusof this chan acter embodying an eiiicient arrangement for intermittently iushing the spraying chamber for the purpose of Washing out any iinn puriti-es and dirt collected therein, yA rur-V ther object is to provide such apparatus` having a device for sprayingl the air current With Water and intermittently thread- `ing theoriiice` of ksaid device to cleary the same of accumulated dirt and at the same time flushing the said orifice and the walls )f the spray chamber with Water to4 clean he same.' Still' alturtlier object is to provide an apparatus* of the character described having its parts Vcombined With an `instrument,'board Vin a convenient andpractical manner.

l To these andotherl ends thev invention resides incertain improvements and combinations of parts, all as Will be hereinafter more fully described, the novel fea-tures be' ing pointed out in the claims at the end of the specification.

In the drawings e Figure 1 is` all central vertical sectional vievvof a hygrometric apparatus embody-` ing the present invention;

i ",'Figure 2 isl a reduced detaily elevation. of,y

parts shown in. Figure 1, as seen from line ga 2a. Y y f 7 u 1 Figure 3 is an enlarged sectional view or a portion of the Water supply system shown in Figure 1 y Figure 4 is an enlarged sectional view of v and 7, i926; seriai'no.' 79,909. i

the saturating device or spray head shown lin Figure 1; i

Figure '6 is an enlarged sectional View of a chamber flushing nozzle substantially on the line E--ar in FigureV 1.

Similar reference numerals throughout the .several views indicate the same parts.

lThe present Vinvention is shown herein, by Way of illustration, as embodied in an apparatus adapted for 'mounting on an instrument board 10, the front of which is viewed from theleft in Figure 1. The apber 11 in Which the current of air is saturated'rvith Water and in which the thermometric element or Wet bulb is located. The chamber 11is constructed, in the present instance, of a casting 12 having the general form of'an elbow, one leg of which 13 is secured' and sealed in any suitable manner tothe instrument board in registry with anvopening 14: in the latter for the passage of air into the spray chamber.v The other leg 15 of the latter has `iitted thereto the upper end of a cylindricalor tubular sleeveV portion 16 conveniently constructed of transparentV glass to afford opportunity for in- 4spection of the interior of the* apparatus.

in any suitable manner as by means of a 1 bracket4 18 on the instrument board. The other end of sleeve 17 has fitted thereto a discharge pipe 19 preferably turned rear- Wardly and passing through an opening in the instrument board toa suitable disposal. point iny rear of the latter. Means arepro-V vided, as f hereafter described, for directing a spray of Water into the current of air vat the upper end of sleevel in which latter, at a. point lower down, the wet .bulb is positioned. p n.

. Thev current of air to be measured is preferably supplied to the spray Vchamber through the instrument vboard opening 14: through a conducting member 2O mounted on theV rear of the instrument board. This member V may be describedl in a general Way as having an outline shape resembling that of an artillery shell. That is to say, it has a main cylindrical portion 2,1, the Walls of `the top ot t n'hlrh ure Curved und rontrueterl :in nt nel :It ile` lower enll 'where the nieniher is provided with u dieehurge openinte` 23. The elrlindrieul portion ol the uleniher luis :t lnternl enuduit 2l eeniniunienting therewith und mounted und :zeitled nt its other end in any nuituhle inunuer against the reur wall olf the Vinntrulnent hoard around the opening lil. lithin the enrlindrieol portion Ll oi? the inenlher ure trunerersely und downwardly directed hnllle plfilee 25 und 26 which tend to throw duet, lint und other solid pnrlieles lowurd the hottoni of the inenlher and die ehurll'e the suine through opening` 23j the puritied nir current passino lsetween bullies 22: :unl 2G und through openingv ll und into he eprujr ehuinher ll. rllhe Saturutingr deviee or epi-ujf heed is indicated. {Ien-k ernllyi, et 2T ns mounted in the upper end oli u flange 2S extending' upwardly troni the top ot the elhow 11 ol' the eprey chamber. This spray heed is shown in det-uil in Figure et :in Comprisiner u hollow ennuie: haring :t pipe eonneetion eonnnnnirnting with its interior. "the easing is formed :it its bottom with n eireulur oriliee 3l into which extends the reduced lower end of n nipple 32 having et the Suid lower end n reduced orilice SB. Nipple l? hun :1 pipe connection 3ft Coui- 1niiuieetinggv with its here und sliding longitudinnll)Y in the lutter is n plunger .-l guided iu u causing or housing 3G containing u Coin` pression spring` 3l which normally holcle the plunger reisen ns shown. The lower end oil: the plunger Curries u needle 38 adapted, when the plunger is deln'eneed, to thread the orifice 33 und. so elem*` the suine of any collection ot' dirt whieh might otherwise tend to elogi' it.

Wnter under euiluhle preeeure i@ supplied through eonnertion 'l-lto orihee ll und rouipreesed nir is supplied to eonnertion 30. It will he noted hnl: orilire 31 is lnrger thun the ouleide diznuel'er of the orilre end ol nipple 31h en thut the nir eurniives through un unuilnr rino; uhont the wuler oriliro und there in thun .tornled un utmniziugg; or Spruy- .ing henri :ulupted to rlireel' un etleelire enneehnped epruy or :tir und *eter down 'urdli1 into the eprrrr ehznnher on in other words, into the upper end ol sleeve ltl, plunger uuly he interinil'lel'ltly depressed hy hund or hy nur `suihihle motor. heine Shown in the present inetnuee ne equipped with :i` eolermid i rleriee for intermittently :leluuting the enum ne. hereu'tter more purlienlnlrhv deeerihed.

The :nenne lor V[induire` the Spraying head `oriliee und the spray ehz-nnher to elem' the neuro ot' eolleeterl hnpuritiee1 is prel'erzlhly in the torni ol' u eonipounrl nor/rafle El) prolleeting tnufrentinlly through the depending; leg; 115 ot the elhow ll :is Shown und haring' n een neetion 1l-( tor the Suppliyr ot water under pressure thereto. This nozzle has :1n upwurdly directed orifice lll, Figure G, arranged to chreet n jet of water with consideruhle il'orre :zgfuiuet he lower end ol' the spray heed und the neurale orllieo ol [he nume to wn=h ellA uur dirt eolleetefil thereon und, purtieulurlr, Such es muy he ,forced therethrough hy the depression ol the elea'zrintenretlle 38. Nozzle {il} hun un auhlitiouul oriliee adapted to direet u jet ot' utter eirelunlerentiully :uruinet the o rlinrlrieul nlln of the Spray chuniher So that the lutter is flushed with :i current or lihn ot water und thorougllly wnehetl. lfhe wnl'er Suppl` eonueetion l lfor nozzle 5,35) in prelferf'ihly eentrolled lif :my Suitable forni oi vulve inrli noted generally nt fl-S und supplied with water under "nitnhle presrnu'e through :1 pipe all. Vulre Llh in the present i neste nee, hns u plunger fl :uilupted to he d epreereled to open the rnlre hy u lever rt-ll piroted u l 4:7 on the relire easing'. lt is nppnrent :troni this (le- Seifiptien that movement ol lever L6 to wird the valve depreseess .trundle d5 to open the fairet thelutter haring; uny Suituhle l'orin ot erulelruelion lor the purpose.

llennl :ire prel'ernhly provided lor simultnneouslj,7 depreffleinle pluirrrei.' 535 to threud und elenr the Sprn): heurl ori liee und to tlush the lutter und the interior o the spray ehnniher througgyh nozzle TM comprising, in the pressent instance. :in inclined end 48 on vulve lever ll-ti lying;` in the puth olE Llownwurd z'uoreinent o'll u cone ehuped portion t9 on the lower end ol :l rod 50 eurryiup'the urnmture of the Solenoid lil, suituhlj; liked on the instrument hoard. Arnnlture portion 49 is diepoeed, nfl Shown, :there the end oli plunger $5.5 eo that` when the Solenoid is operzrledto produce u downward movement et urimiture portion elf?, plungerm IE5 is depresserliund vulve i,lt-"3 'l'ully opened lor the pnrporseS (leuerlherl.

llrl'eenf; ure pre E'eruhltv prlnided. elem -f'or ninnlninine' u .enmll llou' ol wuler throueh the {liffehnrgre pipe l) el' the spiny ehulnlier for wunhilur uwny :ueuinululed flirt.y un shown, hy the pipe h2 provided nt the trout o l? the instrument hozn'rl with n Sight leed 53 `for oljinerrhur the rule ot flow. Pipe .5&3 is eonlinuelfl upwardly in renr ol. the instrunient horn'fl und into nu orertlow derive or eonlniner 553 supplied with wnler through :t pipe eouiurtion 5l. rlhe lutter in roulrolled hy vulve h5 to throttle clown the flow to udeured rolunie, Pipe lill in extended upwnrrh lj; in renlniner 53"* :u: shown :it lill to 'torni an overflow eonneetlon` und ronluiuer lill in Connected nrllineent ile heiten] hy n pipe 57 with eonnertion 3tlo'li the ifprny head. It le ngvpurenl troni thin urrnuueineut that the flow nl.' wulor lo the nprny hemd muy he throtlled down hy the vulve .'l until n Suitable overflow sah-emu in prorded through pipe 52 lor 'liushirur the epruy ehuuiher disehurge pipe lll.

llhe thermornetrie element or elements, of which one or more muy he provided, are located in the lower portion of the spray chamber as shown in Figures 1 and 2. To

inserted to locate the bulbs 60 at their endsr in the spray chamber, as shown, in position to effectively encounter the saturated current' oi air. At 61, Figure 1, is shown a dry bulb element similarly inserted in the inlet member 21 in advance ot the spray head to afford, il desired, a .dry bulb measurement of the temperature ot the air current.

rlhe operation of the apparatus is apparent from the above description of its construction. With Water and air under pressure suppliedk to the Aspray head, the current of air circulated in' any suitable manner through the spray chamber is effectively sprayed and saturated before the current encounters the wet bulb elements 60, so that the latter afford the .desired Wet bulb measurements. The dirt, lint and other impurities in the air are largely removed by the battle construction ot the member 2O but such remaining quantity of .foreign matter as may adhere to the Walls of the spray chamber is by the liushing action of nozzle 39. The

spray head orifice is cleared bydepression ofv plunger at the same time that nozzle 39 is operated to fiush the chamber, by the intermittent operation ot'k solenoid 51 although it will be understood, of course, that these parts may be operated by hand or by another form of motor and a small flow of Water through discharge pipe 19 is maintained by the overliow through pipe 52.

T he invention thus provides asimple,prac tical and eicient form of apparatus particularly advantageous for installation in paper and similar mills and factories Where the operation ot the common form of hygrometric apparatus would be interfered with or prevented by the presence, in large quantities, of dirt, dust, lint and other foreign matter in the air which tends to quickly clog up and effectively removed interrupt the operation of such Lapparatus Without suitable precautions Jfor taking care of lthe same. The invention likewise provides a convenient, compact and self-contained unit adapted to be installed upon an instrufw ment board With the inlet and discharge portions on the rear of the latter so that the whole presents a pleasing appearance.

I claim as my invention;

l. In a hygrometric device of the character described, the combination with a spray chamber, a spray device therein, a thermometricl element subjected to the action of' the spray, an outlet and an air inlet, of means automatically operative to remove from the spray device impurities deposited thereon including means for directing a jet of liquid against the spray device.

2. n a hygrometric. device of the character described, the combination With a spray chamber, a spray device therein, a thermometric element subjected to the action of the spray, an outlet and an air inlet for the spray chamber, of means automatically operative to remove from the spray kdevice 1mpurities deposited thereon, and means in advance of the air inlet for removing from the air impurities suspended therein.

3. Apparatus accor-ding to claim 1, including means Aautomatically operative to remove impurities deposited on the said outlet.

1. In a hygrometric device of the character described, the combination with a spray chamber, 'a spray nozzle for producing a spray therein, a thermometric element subjected to the' action of thespray nozzle and means automatically operative to remove from the spray nozzle impurities deposited therein, including a needle for movement through the spray nozzle, means for directing a jet of liquid against the nozzle and means for concurrently operating the needle and the jet.

SAMUEL s. AMDURSKY.

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